Yr 10 Wk 17 - deeaa 'The Engine of Vengeance'

I'll go for one of my own and a very typical story based on a typical real-life drama, the type I even just read about in the paper yesterday & took some liberties with it:

The Engine of Vengeance

A man pacing the streets early in the morning in town center, just before stores etc. open up.
He's had a sleepless night and pondered about things alone in his small apartment.
It is early winter and it is very cold, there aren't many people around, some going to work etc. and a few parents taking their kids to kindergarten.

He's remembering his family he once had, and how he'd take his son to kindergarten and school years before, before they fell victims of a drunken driver who'd been arrested for DWI for seven times already and let been let free, just days before he smashed into the man's family on their way to work & school.

So he's planning to take his vengeance. He's got a stolen and sawed-short old shotgun hidden in his clothes. It's clumsy and weighs on him like the loss of his family weighs on his soul.
He's about to take his vengeance, but he's still unsure what will happen.

Does he really want to do it this way?
The cars approach the courthouse where he's made his way to, and he's still thinking.
He's lost everything but what good does it do to kill the young drunkard anyhow?
Perhaps there is a small chance to stop the engine of vengeance?